Primary objectives: To examine the difference in erythemal response as a function of dose rate, and to assess the total amount of energy that is theoretically transmitted through a sunscreen within the range of SPF 2-10.

To examine the difference in erythemal response as a function of dose rate, and to assess the total amount of energy that is theoretically transmitted through a sunscreen within the range of SPF 2-10 [ Time Frame: end of study ] [ Designated as safety issue: Yes ]

exposure to UVB radiation for limited time in order to establish subject's minimal erythema dose.

Eligibility

Ages Eligible for Study:

18 Years to 60 Years

Genders Eligible for Study:

Both

Accepts Healthy Volunteers:

Yes

Criteria

Inclusion Criteria:

Fitzpatrick Skin types I-III.

Age 18-60.

Absence of obvious sun damage on the volar side of the forearm or other exposure sites.

Absence of exposure of the arms or other exposure sites to sunlight for two weeks prior to the experiment.

Exclusion Criteria:

History of skin cancer.

Multiple nevi or atypical nevi on the forearm.

Signs of sun damage on the volar side of the forearm or other exposure sites.

Mentally incompetent.

Contacts and Locations

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